package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.redis.RedisConstant;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private RedisTemplate<String,Object> redisTemplate;
    @Autowired
    private SystemUserService systemUserService;
    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha specCaptcha=new SpecCaptcha(130,48,4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        String code=specCaptcha.text().toLowerCase();
        String key= RedisConstant.ADMIN_LOGIN_PREFIX+ UUID.randomUUID();
        String image=specCaptcha.toBase64();
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        return new CaptchaVo(image,key);
    }

    @Override
    public String login(LoginVo loginVo) {
        //验证码为空
        if (loginVo.getCaptchaCode()==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        String uname= loginVo.getUsername();
        String pwd= loginVo.getPassword();
        String key= loginVo.getCaptchaKey();
        String code= loginVo.getCaptchaCode();
        String rCode = (String) redisTemplate.opsForValue().get(key);
        if (rCode==null){
            //验证码已过期
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }else if (!code.equalsIgnoreCase(rCode)){
            //验证码错误
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        LambdaQueryWrapper<SystemUser> wrapper=new LambdaQueryWrapper<>();
        wrapper.eq(SystemUser::getUsername,uname);
        SystemUser user = systemUserService.getOne(wrapper);
        String s = DigestUtils.sha256Hex(pwd);
        if (user==null){
            //用户不存在
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }else if (user.getStatus().equals(BaseStatus.DISABLE)){
            //用户已被禁用
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }else if (!user.getPassword().equalsIgnoreCase(s)){
            //用户名或密码错误
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        return JwtUtil.createToken(user.getId(),uname);
    }

    @Override
    public SystemUserInfoVo getUser(LoginUser loginUser) {
        SystemUser user = systemUserService.getById(loginUser.getUserId());
        SystemUserInfoVo userInfoVo=new SystemUserInfoVo();
        userInfoVo.setName(user.getName());
        userInfoVo.setAvatarUrl(user.getAvatarUrl());
        return userInfoVo;
    }

}
